Roll src/third_party/webrtc 7c1fb4156d24..2bc811ea07b7 (13 commits)

https://webrtc.googlesource.com/src.git/+log/7c1fb4156d24..2bc811ea07b7

git log 7c1fb4156d24..2bc811ea07b7 --date=short --no-merges --format='%ad %ae %s'
2019-11-08 danilchap@webrtc.org Mark checked_cast, dchecked_cast, and saturated_cast as constexpr
2019-11-08 chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com Roll chromium_revision 63455546..b19a2944 (713670:713775)
2019-11-08 gustaf@webrtc.org Remove legacy EchoControlFactory::Create
2019-11-08 mbonadei@webrtc.org RTC_EXPORT webrtc::GetScreenRect.
2019-11-08 tommi@webrtc.org Fix number of arguments being passed when setting the thread name on Windows.
2019-11-08 chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com Roll chromium_revision 3b4dd47d..63455546 (713546:713670)
2019-11-07 honghaiz@webrtc.org Revert "Stop using and delete DEPRECATED_SingleThreadedTaskQueueForTesting"
2019-11-07 peah@webrtc.org Further AGC refactoring in preparation for adding multichannel support
2019-11-07 mbonadei@webrtc.org Revert "Reland "Define WEBRTC_ENABLE_SYMBOL_EXPORT if is_component_build=true.""
2019-11-07 mbonadei@webrtc.org Reland "Define WEBRTC_ENABLE_SYMBOL_EXPORT if is_component_build=true."
2019-11-07 minyue@webrtc.org Make Opus PLC always output 10ms audio.
2019-11-07 chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com Roll chromium_revision 93ed153e..3b4dd47d (713404:713546)
2019-11-07 peah@webrtc.org Correcting the AGC saturation detection for multichannel input

Created with:
  gclient setdep -r src/third_party/webrtc@2bc811ea07b7

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/webrtc-chromium-autoroll
Please CC webrtc-chromium-sheriffs-robots@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

TBR=webrtc-chromium-sheriffs-robots@google.com

Bug: chromium:None,chromium:None,chromium:None,chromium:None
Change-Id: I39c7d0392e222496df1292ca515e2c5108df4f5f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1905886Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#713826}

DEPS

@@ -1512,7 +1512,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + 'dd55f3ca8f2ea716ca917a4aaf36f0729fe902b1',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '7c1fb4156d24a217a497eed6a94ac8cb58e162db',
+    Var('webrtc_git') + '/src.git' + '@' + '2bc811ea07b7ba4817bcb20035998a23cb4aa71a',
 
   # Wuffs' canonical repository is at github.com/google/wuffs, but we use
   # Skia's mirror of Wuffs, the same as in upstream Skia's DEPS file.